The Smaller the Spider the Larger its Brain

New research indicates that the smaller the spider, the larger its brain. William Eberhard, a biologist at the Smithsonian Tropical Research Institute in Costa Rica, recently studied nine species of spiders in which the largest weighed 400,000 times (10+05) as much as the smallest. He found that in the tiniest spiders, “…the central nervous systems filled nearly 80 percent of the body cavity, including 25 percent of the legs.”